target/linux/ipq806x/patches-4.4/096-02-usb-dwc3-Update-maximum_speed-for-SuperSpeedPlus.patch

   1 From 2c7f1bd9127a1a49ee25d9c2b2ce17b11c7fb05f Mon Sep 17 00:00:00 2001
   2 From: John Youn <John.Youn@synopsys.com>
   3 Date: Fri, 5 Feb 2016 17:08:59 -0800
   4 Subject: usb: dwc3: Update maximum_speed for SuperSpeedPlus
   5
   6 If the maximum_speed is not set, set it to a known value, either
   7 SuperSpeed or SuperSpeedPlus based on the type of controller we are
   8 using. If we are on DWC_usb31 controller, check the PHY interface to see
   9 if it is capable of SuperSpeedPlus.
  10
  11 Also this check is moved after dwc3_core_init() so that we can check
  12 dwc->revision.
  13
  14 Signed-off-by: John Youn <johnyoun@synopsys.com>
  15 Signed-off-by: Felipe Balbi <balbi@kernel.org>
  16 ---
  17  drivers/usb/dwc3/core.c | 17 +++++++++++++----
  18  1 file changed, 13 insertions(+), 4 deletions(-)
  19
  20 diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
  21 index de5e01f..001c755 100644
  22 --- a/drivers/usb/dwc3/core.c
  23 +++ b/drivers/usb/dwc3/core.c
  24 @@ -962,10 +962,6 @@ static int dwc3_probe(struct platform_device *pdev)
  25                 fladj = pdata->fladj_value;
  26         }
  27
  28 -       /* default to superspeed if no maximum_speed passed */
  29 -       if (dwc->maximum_speed == USB_SPEED_UNKNOWN)
  30 -               dwc->maximum_speed = USB_SPEED_SUPER;
  31 -
  32         dwc->lpm_nyet_threshold = lpm_nyet_threshold;
  33         dwc->tx_de_emphasis = tx_de_emphasis;
  34
  35 @@ -1016,6 +1012,19 @@ static int dwc3_probe(struct platform_device *pdev)
  36                 goto err1;
  37         }
  38
  39 +       /* default to superspeed if no maximum_speed passed */
  40 +       if (dwc->maximum_speed == USB_SPEED_UNKNOWN) {
  41 +               dwc->maximum_speed = USB_SPEED_SUPER;
  42 +
  43 +               /*
  44 +                * default to superspeed plus if we are capable.
  45 +                */
  46 +               if (dwc3_is_usb31(dwc) &&
  47 +                   (DWC3_GHWPARAMS3_SSPHY_IFC(dwc->hwparams.hwparams3) ==
  48 +                    DWC3_GHWPARAMS3_SSPHY_IFC_GEN2))
  49 +                       dwc->maximum_speed = USB_SPEED_SUPER_PLUS;
  50 +       }
  51 +
  52         /* Adjust Frame Length */
  53         dwc3_frame_length_adjustment(dwc, fladj);
  54
  55 --
  56 cgit v0.12